Sawing and trimming machine



April 27,1926. 1,522,307

W. S. RUNNELS sAwING AND TRIMMING MACHINE FiledNov. s, 1925 2 sheets-sheet 1 April 27 1926. 1,582,307 w. s. RUNNELS SAWING AND TRIMMING MACHINE Filed NOVe 5, 1925 2 Sheets-Sheet 2 EEE;

r Z 3 27 Z7 2f lo 3 l@ /M/ y @1'\\\" 27] 26 T: w Z8 T27 E: :1 -EI NVENTUR, /d//e Kanne/s Wwf ATTORNEYS Patented Apr. 27, 1926.

www STA ,PATENT wALER s; RUNNELS; QFAKALAMAZOO; :g1-GEMA w-QlrkA indicated. by dotted'lines zitlO.'

'Ellis adjustable ganga nielnbcgipispro eiigziggmeiip with tlie,l lagk by li'iiins, Q:l th@ Spying 121. By this zigrllaiigening-,tlig gauge mgmlir. Simay be fifed 'frpin theizik pel'- niigg fue@ sliding aiclju'stimuit of thej gaugenlmbelj, fthe blck lvlL holding the galltge-AiiiL itjs adjusted Iposition .iela't-iye, to the mdf@ The vrqk bay; is :lnngitutliimllyadjustael by niens'oi the levelt l 1B ,which is. pivotedE t@ the rack bar at 14 `and pipvidedj'ili ,lug 15Qngzigiiigdigicam skit 16 iii tli Segmant# likev eztiiSion, 170i vthe base hay 4. This lverroveiliarigs the engl of tliqsegmen, apl is provided with@ detent; 18, see dftjedE lines inlig; IIL @ogg-ting, .with a Series of hvlen's lllinjlielg of tihgsegmen't, lifeby ite*- tgriiiig.;v thi@ layer` in its ,zidjustgcl position. The pim@ 14. ig in ilonqonenltricrelation `to tli. ca m 'grove .so that. as wth@ lverE is swung 011 its 4pivot the rack balais .mQx-qcl lgngipudinallry; 'II-*lie sggnielit is proyiled W-.itlf Scale inxliqiaiy 2O fcilitzit-ing. the, 'uc- `campate adjustment, 'i

Miter the rapid and: Relatively coarsevnd.- jutment by mango tliunalnial manipula# tion of the gauge member the rfiile adjubs; will?y may liefacomplished` by mzins of tlife lever 3, the bar 5 and t-he gauge member 9 being adjusted as a unit.

To effectively clamp the work to the carriage, the gauge constituting an abutment against which the work is clamped, I provide a clamp or vise comprising a ratchet bar 21 which is pivoted at 22 to the rear end of the carriage slide 3 so that it may be swung up out of the way permitting freedom of operation in the machine, the front end of the ratchet bar being detachably secured to the carriage by means of the screw 22. In operation the rack bar is normally fixed to the table but it may be swung up out of the way by releasing the screw 22.

The bar-like clamping member 23 is supported in the blocks 2st and 25 which constitute supports for the ends of the ratchet bar 2l.

I provide a pawl 26 which is in the form of a block having oi'set pawl teeth 27 adapted to be engage with the ratchet teeth of the ratchet bar as shown in Fig. IV. This pawl is longitudinally slotted at 27 to receive the screw 28 so that the pawl is supported for pivotal and sliding movement on the clamping bai'. A coiled spring 29 is aranged to engage the screw 2S, thereby yieldingly supporting the pawl.

I provide an adjusting lever 29 which has threaded engagement with a fulcrum block 30 pivoted at 3l on the clamping bar, the pivot being in front of the pawl. The inner end of this lever is adapted to engage the recess 32 in the front end of the pawl so that the lever may be tilted to engage and disengage the pawl and rotated to apply clampingA stress to the clamping bar. lVhen the pawl is freed from the ratchet bar the clamping bar may be moved freely to or from the work, the lever then being in an elevated position. The weight of the lever tends to engage the pawl so that when it is desired to adjust to clamping position the clamping bar is moved against the work by means of the lever, the lever swung downwardly or permittted to fall to engage the pawl and the lever rotated to applyl clamping stress.

My improved clamping means is very simple in structure, easily adjusted, is powerful and is strong and durable. It has the advantage of rapidity of adjustment as has also the means for adjusting the gauge. It will be understood that the gauge constitutes an abutment against which the work is clamped by the work clamping means.

I have illustrated and described my improvements in an embodiment which I have found very practical. I have not shown the means for driving the saw indicated at 33, the saw being supported on a swinging support indicated by dotted lines at 3a and the adjustment of this support being through the lever 35. These parts, however, form no part of my present invention and are, therefore, not illustrated or described in detail herein.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

l. In a structure of the class described,

tthe combination of a ratchet bar, a clamping bar slidably associated with said ratchet bar, a pawl having a longitudinal slot therein, a pivot on said clamping bar engaging said slot whereby the pawl is supported for pivotal and longitudinal movement, a spring arranged to urge said pawl yieldingly forward on its said pivot, an adjusting lever,

and a fulcruni blocli pivotally mounted on free for adjustment when the pawl is diseiigaged'froin the ratchet bar.

2. In a structure of the class described, the combination of a ratchet bar, a clamping bar slidably associated with said ratchet bar, a pawl mounted on said clamping bar for pivotal and sliding movement, a spring arranged to urge said pawl yieldingly :torward, an adjusting lever, and a fulcrum block pivotally mounted on said clamping bar in front of said pawl, said lever being threaded into said fulcrum block to engage the front end of said pawl whereby the pawl may be engaged and disengaged with the ratchet bar by a swinging movement of the lever and clamping stress applied to the clamping bar by rotative movement of the lever when the pawl is engaged with the ratchet bar, the clamping bar being free for adjustment when the pawl is disengaged from the ratchet bar.

In a structure of the class described, the combination of a relatively fixed ratchet bar, a clamping member slidably associated with said ratchet bar, a pawl mounted on said clamping member for pivotal and sliding movement, a spring arranged to urge said pawl yieldingly forward, an adjusting lever having a pivotal and threaded connection with said clamping member engaging the front end of said pawl whereby the pawl may be engaged with and disengaged from the ratchet bar by a swinging movement of the lever and clamping stress applied to the clamping bar by a rotative movement of the lever when the pawl is engaged with the ratchet bar, the clamping bar being free for adjustment when the pawl is disengaged from the ratchet bar.

il. In a structure of the class described, the combination of a table, a ratchet bar hinged llO at its rear end to said table, means lfor detachably securing the front end of said ratchet bar to said table, a clamping bar slidably associated with said ratchet bar, a pawl adjustably mounted on said clamping bar to coact with said ratchet bar, and an adjusting lever having a pivotal and threaded connection to said clamping bar and coacting with said pawl so that the pawl may be engaged with and disengaged from said ratchet bar by a swinging movement of the lever and clamping stress applied to the clamping bar by rotative movement if the lever when the pawl is engaged with the ratchet bar.

5. ln a structure ot the class described, the combination of a table, a ratchet bar hinged at its rear end to said table, means for detachably securing the front end ot said ratchet bar to said table, a clamping bar slidably associated with said ratchet bar, a pawl adjustably mounted on said clamping bar to coact with said ratchet bar, and an adjusting lever having a pivotal and threaded connection to said clamping `bar and coacting with said pawl so that the pawl may be engaged with and disengaged trom said ratchet bar by a swinging movement of the lever and clamping stress applied to the clamp-ing bar by rotative movement of the lever when the pawl is engaged with the ratchet bar. Y

6. In a structure of the class described, the combination of a ratchetbar, a clamping bar slidably associated with said ratchet bar, a pawl adjustably mounted on said clamping bar to coact with said ratchet bar, and an anjusting lever having a pivotal and threaded connection to said clamping bar and coacting with said pawl so that the pawl may be engaged with and disengaged from said ratchet bar by a swinging movement or' the lever and clamping stress applied to the clamping bar by rotative movement of the lever when the pawl engaged with the ratchet bar.

7. l'n a structure of the class described, the combination oit' a relatively iixed ratchet bar, a clan'iping bar slidably associated therewith, a pawl adjustably mounted on said clamping bar to coact with said ratchet bar, and an adjustinglever having a pivotal and threaded connection to said clamping bar and coacting with said pawl so that the pawl may be engaged with and disengaged from said ratchet bar by a swinging movement of the lever and clamping stress applied to the clamping bar by rotative movement of the lever when the pawl is engaged with the ratchet bar.

8. In a structure of the class described, the combination of a. gauge comprising a base bar,` a rack bar mounted for longitudinal sliding adjustment on Said base bar, an ad- ,o segment being provided with gauge indicia operatively associated with said lever.

9. In a structure oit the class described, the

combination ot a gauge comprising base bars, a rack bar mounted for longitudinal .sliding adjustment on said base bars, an adjustable gauge member slidably mounted on said rack bar and provided with a dog coacting therewith whereby the gauge member is secured in its adjusted positions, said base bar being provided with gauge indicia operatively associated with said adjustable gauge member, and means mountedon said base bars tor slidably adjusting said rack bar provided with coacting gaugeindicia.

10. In a structure ot the class described, the combination of a gauge comprising a raclrbar mounted :tor longitudinal adjustment, an adjustable gauge member provid ed with a dog coacting with said rack bar, said adjustable gauge member having gauge indicia operatively associated therewith, and means for longitudinally usting said rack bar comprising a cam and a lever operatively associated ytherewith and pivotally connected to said rack bar, said rack bar adjusting means having gauge' indicia operatively as.- sociated therewith. c

In witness whereof I have hereunto set my hand.

. l/VALTER S. RUN N ELS. 

